Sand and gravel washer



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J. J. McMANAMEN, C. F. SMITH AND A. L. MUNRO.

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SAND AND GRAVEL WASHER.

APPLICATION FILED DEC. 21, I917.

Patented Oct. 4, 1921.

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ATTORNEY.

J. J. McMANAMEN, C. F. SMITH AND A. L. MUNRO.

SAND AND GRAVEL WASHER.

APPLICATION FILED 05mm, 1911.

Patented Oct. 4, 1921.

3 SHEETS-SHEET 2.

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1;]. McMANAMEN, C. F. SMITH AND A. L. MUNRO.

SAND AND GHAVEL WASHER.

APPLICATION FILED 050.21.1917.

1,392,779. .Patnted 0%. 4, 1921.

3 SHEETS-SHEET 3.

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ATTOENEY OFFICE JOHN Jl'm m'aixmMEN, oEMITo EEn'soUTn DAKOTA, AND CHAR-LES E. SMITH AND E ANDER L. vwnno, on MILWAUKEE,

WISCONSIN, ASSIGNORS TO SMITH ENGINEERING WORKS, E MIL AUKE WISCONSIN, A coarozaacnxon 0E Is- Application filed December 21', 1917.

To-aZZw/wm it may concern:

Bejit known that we, JOHN J. MC MANAMEN, a citizen of the United States, and resident of Mitchell, South Dakota, and CHARLES-.F. SMITH and ALEXANDER L. MUNno, respectively, a citizen of the United States and a subject of the King of England, and both residents of Milwaukee, W isconsin, have invented new and useful Improvements inuSand and Gravel Nashers, of which the following is a description, reference being had to the accompanying drawings, which area part ofthis specification.

This invention has for its objectto provide a portable machine for washing sand and gravel to remove the soluble matter and other foreign matter therefrom to improve its. quality forv concrete making and other purposes.

Y An object is to simplify the construction to make the machine light. and compact,

.view of a sand and gravel washerconstruct- .ed glIl accordance with th s lnvention portabl and easily operated.

Another object of the invention is to so mount the washing drum at its discharge end'as to permit of the ready removal of the screen-s0 that the screen may be changed when worn or when a diiferent mesh. is desired, without .dismembermentof the machine or disturbingthe centralishaftsupport for the washing drum.

Another object of the inventionis to utilizethe central supporting shaft of the washing. drum as a-means fonintroducing water to the washing drum.

it Another object of the invention is to per,- fect detailsof construction of a. sand and gravel washer of this type.

, .lVith the above and other objects in view,

theinvention consists in the sand andlgravel washer, its parts and-combinations of parts, as herein :claimed and all equivalents.

Referring to the accompanying drawings in-which like characters. of reference indicate the sameparts indifferent views:

.Eigure 1 is a central longitudinal sectional Fig. .2 is a plan view thereof;

5 ig. 3 is a view of the discharge end thereof; r and,

washing drum. v In. these drawings lnd cates a frame or Fig. 4 is a transverse sectionalview of the Specification of Letters Patent.

drum. The bearing ring 18 forms form troughs with SAND AND GRAVEL WASHER.

Patented Oct. a, 1921. Serial No. 208,313.

place to place. At one end of thefraine is mounted a casting forming afeed hopper 11 through which passes a central rigid shaft 12. A cylindrical washing drum 13 has its ends formed by truncated conical rings-14 and 15 respectively, on spiders 16 and 1-7 which are journaled on the fixed shaft 12. The spider bearing on the shaft 12a-t the feed end of the machine constitutes the support for this end of the drum, while the other end of the drum is supported by a bearing ring 18 mounted on the frame and having rotatably mounted within it a flanged ring 19 which is secured to the washing an annular hollow shell with its edges fitting against flanges of the ring 19, and one of said flanges has gear teeth 20 formed on it and meshing with a beveled pinion 21 contained within the ring 18 and mounted on a shaft 22. The shaft 22, besides having a bearing in the ring 18. is journaled. in a bearing bracket- 23, and has a'gear 24 meshing w th a pinion 25 on a drive shaft 26 which 15 ournaled in the bearing rrng18' and the bracket 23, and is provided with a belt pulley 27 for connection with any suitable engine or motor for driving the machine. The washing drum isthus rotatably supported by the shaft 12 and the bearing feed thematerial into the drum, andlifting blades 28, mounted on the inner. wall of the drum and extending lengthwise of the drum, the walls of the drum in which the sand and gravel are lifted by the rotaryv movement of. the drum and carried to the upperpai't .of the drum, where,;'owing to the change in position of the blades, they are'dropped onto inclined troughs or chutes 29-, .bywhich they are advanced toward the discharge end of the drum. The inclined troughs or chutes 29 are supported by and fixed on the central shaft 12, each being preferably mounted on a collar whichhas set screw engagement with the-shaft. The cleaning drum 12 contains water up to the level of the overflow through the opening ring 18 and is rotated by the beveled gearend of the tubular shaft 12 at the discharge end of the machine, as shown, though it may,

be connected to the other end of the tubular shaft if desired. The water is sprayed through openings 34 in the tubular shaft near the discharge end of the machine so that the flow of water through the drum is in a direction opposed to the travel of the sand and gravel material through the drum.

The repeated lifting of the material by the lifting blades 28 and its falling upon the successive inclined chutes 29 causes it to advance toward the discharge end of the drum at the same time that it is being repeatedly dropped into the water to separate the soluble matter and the light matter therefrom, and when it reaches the discharge end of the drum its travel down the last chute 29 carries it through the inwardly projecting conical portion of the ring 15 and it is thus discharged from the drum and into the conical screen 35, which is removably mounted on an outwardly extending flange of the ring 15 and serves to separate the sand frogn the gravel as it turnswith the'drum. When it is desired to change the screen, to renew it when worm, or to change the mesh, this may be done by merely disconnecting the water pipe and the screen and without disturbing the other parts of the machine.

The central shaft supports the feed end of the drum, making external supporting means unnecessary. while the bearing ring 18 inclosing the driving gear connection supports the discharge end of the drum, and the shaft at this end ofthe drum is supported by the drum ring. Thus the shaft atone end supports the drum, while at the other end it is supported by the drum, making a very light construction suitable for portable use, and avoiding the presence of a hearing at the discharge end of the drum that would interfere with the removal of the screen. This arrangement gives ample strength to all parts, especially the central shaft upon the chutes of which the sand and gravel is dropped.

The machine of this invention is found in practice to perform its work thoroughly and efficiently, and can be made so light and compact asto be conveniently moved from place to place, and is, therefore, most suitable for the use intended of preparing sand and gravel for concrete construction work.

What we claim as new and desire to secure by Letters Patent is:

1. In a sand and gravel washer, a'rota table washing drum, a shaft fixed at one end forming a support for the feed end of the drum, and an external bearing forming the support for the discharge end of the drum, said discharge end of the drum forming a support for the free end of the shaft.

2. In a sand and gravel "washer, a, fixed shaft, a series of inclined "chutes mounted thereon, a rotary cleaning drum "surrounding the shaft and its chutes and rotatably supported on the shaft at its feed end, and

external supporting means for the drum at its discharge end. r

3. In a sand and gravel washer, a central shaft rigidly supported at one end, inclined chutes mounted on the shaft, a rotatable cleaning drum surrounding the shaft and its chutes and having a bearing on the shaft at its feed end, an external bearing for the discharge end of the drum, and a support on the discharge endof the drum for the free end of the shaft.

4. In a sand and gravel washer, a. shaft rigidly supported at one end, inclined chutes mounted thereon, a cylindrical drum surrounding the shaft and its chutes and having a supporting bearing'on the shaft near its supported end, lifting blades within the cleaning drum for lifting material and dropping it on the chutes for advancing it toward the discharge end of the drum, an external hearing at the discharge end of the drum, and a support at the discharge end of the drum rotatably mounted on the free end of the shaft.

5. In a sand and gravel washing machine,

a supporting bearing on the shaft next to the feed hopper. an external bearing at the discharge endof the drum, and a. supporting bearing at the discharge end of the drum for the free endof the shaft.

6. In a sand and gravel washer, a rotary cleaning drum having its feed end rotatahly supported, a flanged ring secured to the other end of the drum. a bearing ring surrounding the flanged ring and forming a support for the end of thedrum, said rings together forming an annular casing, gear teeth on one of the flanges of the inner ring, a suitably driven shaft passing through the hearing ring, and a pinion on said shaft meshing with the gear teeth.

7. A sand and gravel washer, comprising a frame; a feed hopper mounted thereon, a tubular shaft with one end fixed in the feed hopper, inclined chutes mounted on the shaft, a rotary cleaning drum surrounding the shaft and its chutes and having aspider with an outwardly projecting truncated cone-shaped flange forming one end there- I der with an inwardly projecting truncated cone-shaped flange forming the other end thereof with the spider supporting the free end of the shaft and the flange receiving the end of the last chute, a pair of rings surrounding the discharge end of the drum and forming a casing between them and consist ing of an inner flanged ring secured to the drum and an outer bearing ring secured to the base, gear teeth formed on a flange of the inner ring, a suitably driven shaft projecting through the bearing ring, a pinion thereon meshing with the gear teeth, a screen removably mounted on the spider at the discharge end of the drum, and means for supplying the tubular central shaft with water.

8. In a sand and gravel washer, a horizontal shaft, a support in which the shaft is fixed at one end, a drum having a bearing at one end journaled on the shaft near the support, an external bearing at the other end of the drum forming theonly support therefor whereby this end of the drum is free from stationary obstruction, a spider at the unobstructed end of the drum fitting around the shaft, and a cylindrical screen removably mounted on the spider to form an extension of the drum.

In testimony whereof, we afiix our signatures, in presence of two witnesses, as of the 10 day of December, 1917.

Witnesses:

E. L. SANBonN, A. VAN KooY. 

